StoCoat Lotusan is an exterior coating with a self-cleaning effect. It is highly resistant to mold, mildew, and algae and offers weather and chalk resistance. Used for both new construction and recoat projects over concrete, stucco, EIFS, and fiber cement board substrates, it incorporates high water vapor permeability. It has a smooth matte surface and is available in 38 standard colors. Sto Corp. 800-221-2397.